Based on your query, Enlighten AI could be a suitable choice. It uses strong encryption methods to ensure the safety of student data, which aligns with your interest in cyber security. This feature ensures that all student data processed through the system is kept secure and confidential, reducing the risk of data breaches or unauthorized access.

Moreover, Enlighten AI offers AI-powered grading and bias-reduction features. The AI-powered grading learns from your unique grading style and suggests grades and feedback accordingly, potentially saving you a significant amount of time. The bias-reduction feature hides student names during grading to help reduce unconscious bias, promoting a fairer assessment process.

Currently, Enlighten AI is free to use, making it a cost-effective solution for your needs.